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Weaver 63BS Base Marlin Standard 1Pc Detachable Top-Mount Base Silver 48447
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$14.99
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SKU: 48447-076683484475
Overview
This one-piece top-mount base is intended for hunters and shooters setting up compatible Marlin, Mossberg, and Western Field rifles with a secure optic mounting solution. Its tight-machined fit and square-cut notch are designed to work with Weaver detachable rings, helping the base interface cleanly with the ring cross bolt. The silver finish gives it a straightforward, utilitarian look that suits a practical field setup. It is a focused mounting component rather than a universal option, so confirming rifle compatibility is essential before purchase.
Why Hunters Choose the Weaver
Machined Tight
Tolerances for a custom fit
Square-cut Notch
Weaver detachable ring cross bolts
Built Help
Resist the effects of recoil
Compatible Wide
A wide range of Marlin,
Single-piece Detachable
Top-mount base for straightforward optic
Key Features
- One-piece detachable top-mount base for Marlin standard rifles
- Machined to tight tolerances for a custom fit
- Square-cut notch is designed to mate with Weaver detachable ring cross bolts
- Built to help resist the effects of recoil
- Fits Marlin 9, 45, 30AS, 36, 62, 93, 336, 375, 444, 1893, 1894, and 1895
- Also fits Glenfield 30, Zane Gray, Camp-9 Carbine, 922M, 989, Mossberg 640, and Western Field 740
Best Used For
- Hunters mounting optics on compatible Marlin rifles for a secure, detachable setup
- Owners of listed Marlin, Mossberg, or Western Field models needing a top-mount base
- Shooters wanting a one-piece base designed to mate with Weaver detachable rings
- Users replacing a worn base on compatible rifles without changing the rifle’s profile
Specifications
| Base Type | Top-Mount Base |
|---|---|
| Blade Finish | Silver |
| Fitment | Marlin 9, 45, 30AS, 36, 62, 93, 336, 375, 444, 1893, 1894, 1895, Glenfield 30, Zane Gray, Camp-9 Carbine, 922M and 989; Mossberg 640; Western Field 740 |
| Machined Tolerances | Tightest tolerances |
| Number Of Pieces | 1Pc |
| Recoil Management | Square-cut notch designed to mate with Weaver detachable ring cross bolt |
Pros
- Machined to tight tolerances for a custom fit on compatible rifles.
- Square-cut notch is designed to mate with Weaver detachable ring cross bolts.
- Built to help resist the effects of recoil during use.
- Compatible with a wide range of Marlin, Mossberg, and Western Field models.
- Single-piece detachable top-mount base for straightforward optic mounting.
Considerations & Trade-offs
- Compatibility is specific to the listed Marlin, Mossberg 640, and Western Field 740 models, so fit should be verified against the exact firearm before purchase.
- This is a 1-piece detachable top-mount base, which may not suit setups that require a different mounting style or multi-piece configuration.
- The product information does not include ring compatibility beyond Weaver detachable rings, so matching hardware should be confirmed separately.
- The silver finish may not match every rifle’s existing hardware or preferred low-visibility setup.
Suggested Comparisons
- Scope bases
- Detachable scope rings
- One-piece mounting systems
- Rifle optics mounts
Suggested Accessories
- Detachable scope rings
- Scope
- Mounting screws
- Gun vise
Frequently Asked Questions
Which rifles is the Weaver 63BS base compatible with?
The listed fitment includes Marlin 9, 45, 30AS, 36, 62, 93, 336, 375, 444, 1893, 1894, 1895, Glenfield 30, Zane Gray, Camp-9 Carbine, 922M, and 989, plus Mossberg 640 and Western Field 740.
Is this a one-piece base?
Yes. The product title identifies it as a 1-piece detachable top-mount base.
What is the finish/color of this base?
The title lists it as silver.
How is this base designed to handle recoil?
The description says it is designed to fight the effects of recoil with a square-cut notch that mates to the cross bolt in Weaver detachable rings.
Does the product description mention installation hardware or included rings?
No. The provided data describes the base and its fitment, but does not list included hardware or rings.